Category: Orchid Doctor

INSECTICIDES: Not Specifically Recommended for Orchids

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Manufacturers do not try their products on all plants; if recommended for orchids and harm follows a damage suit could arise; Cygon was developed for some other control; it has harmed broughtonias;... Read More

INSECTICIDES: Organic Dusts for Thrips

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Rotenone, Pyrethrums, Ryania, etc., are not as good as Malathion, plus a sticker-spreader. A80-1141 Read More

INSECTICIDES: Products Registered for Use on Orchids

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A list with those pests attacked, with dosage recommended; refer to AH86-62 Read More

INSECTICIDES: Prophylactic Spraying

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Overuse of deterrent sprays is not recommended because it encourages development of resistant strains of pests; it is best to treat each problem as it arises. A85-866 Read More

INSECTICIDES: Recommended

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Aramite, Cygon 2E, Malathion, Plant Fume. OD67-50 Read More

INSECTICIDES: Rubbing Alcohol

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Recommended for use on mealybugs, soft scale and possibly others, do the top and bottom of leaves as a spray; it quickly dessicates the pests. OIE86Sept-15 Read More

INSECTICIDES: Their Toxocity

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago For a list of 197 poisons, their use and toxicity, cross references to other names, their LD-50 dose in mg., and the routes they take to poison people, refer to A66-881+; N364+ Read More

INSECTICIDES: Toxicity

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Expressed in LD-50 (Lethal Dose for 50% of animals on which it was tested) plus a dose number, the lower it is the more lethal; examples: Chlordane 475 to 590; chlorobenzilate 3,100; Cygon 2E 215 t... Read More

INSECTICIDES: Wettable Powders (w.p.)

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Contact sprays with W.P. are often safer to use because less easily absorbed by both humans and plants; they are effective where they are carried by water droplets so a sticker/ spreader/wetting ag... Read More

ACID OR ALKALINE: Changing the Values

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Various means can be used: tufa, a limestone form, can be added to paphiopedilums from limestone cliffs; bark composts acidify with age; peatmoss, pine needles, oak leaves in the mix produce acidit... Read More